Baking oven



3 Sheets-Sheet 1 L. D. HOULIS BAKING OVEN n Filed July 30. 1926 Jan. l, 1929.

Jan. l, 1929. 1,697,357

L. D. HOULIS BAKING OVEN Filed July 30, 1926 3 Shets-Sheet 2 Jan. 1, 1929. 1,697,357

L. D. HOULIS BAKING OVEN Filed July so. 192s s sheets-sheet 3 Patented Jan. 1, 1929.

PATENT ofFFleEf LOUIS' D; HoULIs; or JDALLAsg TEXAS BAKING OVEN.`

Applica'tib med July 3o, 1926.: ser'iiA N6. 126,0'28'.

This `invention relates to newand useful improvement-s in baking ovens.

chamber and which willA be free, freni heat y obstructing supports, shelves andthe like.

A particular object of the inventionis 4the elimination 'of so-.called hoty and cold spots, thusinaking :tor evenl and regular baking.V l Another object ofthe invention is to. provide an ovenin which theheatingelement is reciprocated under the A.baking fgrille, whereby more fei'cient ,baking isv obtained, nel issaved and much quicker action vis se- Cured.-

A still further object ofthe inventionfis to provide'an oven in which the baking pans are supported on a stationary grille, whereby their, cont-ents are substantially vfree frorn vibration and the risingv `heat currents are spread and' distributed. and caused to take direct-upward paths. i

A constructiojdesigned to carry .out the invent-ien -will be hereinafter described, tgether Vwith oth-erfeatures of the invention.

The invent-ion will vbe more readily understood 'from a reading ofthe following speciicationand'by reference tothe accompanying drawings, in whichA an exaniple 'of the invent-ion' vis shown and' wherein-z Fig-.z 11 isa longit-udinalwerticaly sectional view of an oven constructed in accordance ,withinyfinvention,t A 3" 'Figa-2 is a trans'verse'sectional-view taken ontheline 2-2 of'Fig. 1,

Fi'gxf is a partial: horizontal cross-sectional View, l

Figi '-4 is a detail .ofonel of the burners', l Fig.5 isa sectionaly view ot: one of the burners,

Fig; 6 means, e Fig. 7 is tn-enlarged'liorizontal 'orosssectionallview takenon the linef 7-^7 of 'Figf1, Fig; 8 yis fan" enlarged 'transverse ysectional viewntaken on' the line 8-8 'of Fig. l1, and

Fig.`9 is a' detail 'o'fth'e'inanifold and conn ponent parts. K'

In the; drawings thez numeral l1() designates Arf oven 12 havinglitssideand end walls and top' i 13' ifor`rne`cl' f'fheat; ins'ulati'r'ir '.niaterial,

traine 'extends inwardly alongi 'each sdey of the ovenand tracks Mare seuredthereonj" isa detail 'of the"burner shifting Burner carriers Iin ithe-ffrnrof rectangulanr flanged. l'are connectedby ro to vtorina rigid carrier unit. Eachi'ranie is provided at'each end witha lOido've,drxoller 1'?" resting on the tracks. vlli/'bile any"suitablel gas burners `.may-be mounted kQni'the frames 15,1 p efer to irse thefmanifoldtype: have shown two` W ,shapes 1S and onelY Vshape 19 resting onf the flangeswjoif l@dell traine# Each inanitoldhasa 'plurality of burner lcol-l lars 20 each having a bottom 21 with a eentral aperture 22l Zland A.oapQ?) having a depending knotched"flange 24 nis fit ted on veach collar and each capihas, a cenf trail .depen-ding taper-ed stud 25l lextending through the opening andredueing the area of the latter. v,l/Vhen the burner Vis operating this' stud will become h ot, thusgpreheating thegas as it; passes through the restricted openings 22.

Each 'burner 26 leading ronrits underside. A hanger @amplsima we arms 27 and@ deindingenral shank 28 havingV a loep 29 at its bottoni, is mounted between theburner r'aines. lThe ends lofthe arnis are astened to the center` ot theftranies. i Inthe loopis fastened the nippleV 30 of a. niani'rfoldhead 31. A A flexible gassupply pipe 31, (Figs 7 and 8) is -connected to the nipple.

Y A central longitudinalguide formed 'of angle irons'has its ends supported jon Ecross barsfSS secured tothe' legs 11 below-the base traine 10. The ends of the guide are covered by plates Sal havingdown-turned flanges at their inner ends. This leavesa space .at the central 1 portion of the guide between flanged plates. The ends of the' pipes .26 are turned down on each side of lthe hanger Y Shank 28 and suitably fastened thereto 'so as to niove therewith. These pipes `extend manifold has. Suiivlrlhne through a slide plate 36. mounted inl said guide. Adjustable end members 36 are v mounted on'the slide plateand'each has a l.depending headed stud Y37` engaging in ax slot 38 inthe slide plate.V Each plate 36 hasan uptnrned flange- 39 adapted to'enga-ge the The manifold head 31 hasfangulargas jets '40 `including ycockstl. The jets have.l their a basefranie which is supported' 'on legs 11.

ends extending up into the lower endspf the supply pipes which are much larger so as to adinitthe proper yamount of air. Itwill bessen thatnvhen' the hanger is moved along the guide 32,'t'hehead 31,-pipes 26 and b'urner franes" ltbeilig attached thereto'fwill 'likey it is extended.

strikes the end wall and by reason of the stud 37 and slot 38, further movement of the member is prevented, but the slide plate continues until the end of the stroke. The trailing member 36 is carried by the slide until its flange 39 engages the flange 35, whereby guideway is kept closed.

vWvhile any suitable means may beV em-A ployed for reciprocating the hanger, I prefer an electric motor drive. An under slung bar 42 is suspended from the cross bars 33 under the guide 32. A vertical drive shaft 43 mounted in a bearing 44 in said bar has a sprocket 45 fastened on its upper end and' a worm wheel 46 secured to its lower end under the bar. The worm is driven bya worin screw 47 suspended in a bearing bracket 48 and having apulley 49. The shaft is driven by a belt 50l running from the pulley to a pulley 5,1.onthe shaft of an electric motor 52.

A sprocket chain 53 passing raround the sprocket 45 drives a sprocket 54 mounted on a vertical shaft 55 in a bearing collar 56 in the bar 42. The sprockets are suitably spaced to give the burner unit the proper travel. A stirrup 57 is secured to the bottom of the loop 29V and has a transverse slot 58 V(Figs. 6, 8 and 9) for receiving a pin 59 extending upwardly from the ch ain 53. By this connection the hanger is reciprocated. When the i stirrup reaches the end of'a stroke the pin will travel Vin the slot 58 whileV rounding the sprocket. v Y' The rburner frames l5 are spaced so that eachwillA come nearly to, but not cross, the transverse center of the oven and while one burner frame is adjacent the centerthe other is at one end of the oven. Thus as the burner frames arereciprocated, substantially the entirelength of the oven is traversed and evenn ly heated.

Some distance above the burners, I mount a stationary grille 60 of suitable construction. The pans or trays containing the dough to be baked are placed on this grille, a proper door (not shown)V giving access thereto. A false roof or ceiling 6l is mounted immediately below the top 13 and is perforated. Bottom plates 62 extending from the sides ofthe bar 42 up to the sides of the base frame 10 eX- cludeJ air from the bottom of the'oven. The heat currents from the burners pass directly up through the-grille 60 and escape through the perfor-ations of the roof 6l. A pair of` vents 62 in the top 13 are spaced so asto Vdraw the currents `eojually from each half of Y the oven,rwhereby the direct upward trend of the heat currents is maintained.

- It is obvious that the reciprocating burn- By this arrangement the fuel and making for economical operation n and maintenance. I

Various changes in the size Vand shape of the different parts, as well as modifications and alterations7 may be made within the scope of the appended claims. Y

While I have shown a grille for supporting the articles to be baked, it is to be understood that any form of support may be used and it isr not essential that this support be foraminous.

`What I claim, is:

l. In a baking' oven, a baking support, tracks along each side of the oven below the support, a pair of spaced carrier frames having rollers mounted on said tracks, burners carried by said fames ano deposited transversely of the oven, a manifold head attached to said carrier frames, supply pipes leading from said head to the burners, and means for driving the manifold and the frames.Y

' 2. In a baking oven,`the combination with reciprocating burner carriers of a hanger attached thereto, a manifold head carried by the hanger, burners in the carriers connected with the head, an endless sprocketchain, a connection between the hanger andthe chain, and a motor for driving the same.

3. In a baking oven, the combination with a reciprocating burner carrier, of a guideway, a hanger depending from the carrier through the guide-way, a slide member for closing the guide-way, and means for reciprocating-the hanger.` Y

4. In a baking oven, a stationary grille in the upper portion of the'oven extending longitudinallyV thereof, a burner unit mounted Sil loo

to reciprocate at the lower portion of the Y oven below the grille, and means for continuously reciprocating the'burner unit longitudinally in the oven whilesaid burner is ignited.

' 5. In a baking oven, a longitudinal enclosed baking chamber, a stationary baking support arranged longitudinally inthe upper portion of the chamber, a burner support 'arranged longitudinally inthe bottoin of the chamber, a burner mounted for longitudinal Y burner substantially the entire length ol the baking support while the oven is in operation.

7. In a baking oven, a longitudinal enclosed baking chamber, a. stationary baking support lmounted longitudinally in the upper portion of the chamber, a carriage arranged to reciprocate at the bottom of the chamber longitudinally thereof7 burners mounted on said carriage, and motor means ior reciprocating said burner carriage W'hile the oven is in operation.

8. In a baking oven7 a longitudinal enclosed baking chamber, a stationary baking support mounted longitudinally in the upper port-ion of t-he oven, a carriage arranged to reciprocate at the bottom of the chamber longitudinally thereof, burners mounted on said carriage, and means tor constantly re.- ciprocating the carriage longitudinally of the baking support While the ovenis in operation.

9. In a baking oven, a longitudinal enclosed baking chamber a stationary grille mounted longitudinally in the upper portion or the chamber, tracks mounted along each side oic the chamber at the bottom thereof, a burner carriage mounted to reciprocate on said tracks, burners carried by said carriage, and motor means for continuously reciproeating said carriage While the oven is in operation.

IO. In a baking oven, a longitudinal enclosed baking' chainber, a baking support extending longitudinally in the upper portion or" the chamber, tracks along eac-h side ot the bottom' of the chamber, a carriage mounted to reciprocate on said tracks, burners mounted on each end of the carriage and disposed transversely of the chamber, said burners being spaced apart so that when the burner at one end of t-he vcarriage is at the end of the chamber the other burner Will be at the central portion of the chamber7 and means lor reciprocating said carriage.

In testimony whereof I a-iiix my signature.

LOUIS D. HOULIS 

